[openib-general] [PATCH] IB/core - ib_umad can cause address alignment fault onia64

[Michael S. Tsirkin]

> Quoting r. Sean Hefty <mshefty at ichips.intel.com>:
> Subject: Re: [openib-general] [PATCH] IB/core - ib_umad can cause address alignment fault onia64
> 
> > But I thought it is the data field which is cast to ib_mad_hdr
> > and not ib_user_mad? If so Jason's suggestion of using
> > 	u64 data[0]
> > makes more sense.
> 
> I don't think that you can change struct ib_user_mad or struct ib_user_mad_hdr 
> without breaking the ABI.

This won't break ABI, since data is aligned already relative to start of struct.
We only force the struct itself to be aligned, which has no ABI implications.

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MST